When you choose Print Directory for the directory of a folder or disk that
has one or more locked files, and with the view set to something other than
Icon or Small Icon, the pixels for the padlock are printed like fat bits on
top of (or next to) the text. The size of the padlock (usually very
distorted) varies.
You can work around the problem under MultiFinder by turning on background
printing.
This has been fixed in System 7.